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Putting an organic label on ordinary foods can trick shoppers into believing that they are healthier, taste better and have fewer calories, new research suggests.

Known as the 'health halo effect', previous studies have shown that we perceive foods labelled as organic to be healthier.

Now, scientists at New York’s Cornell University have found the label can influence much more than health views - perceptions of taste, calories and value can be significantly altered when a food is labelled 'organic'.